In order to verify the effectiveness of URIR, we select state-of-the-art algorithms recently proposed for comparison. These algorithms are: NFM [1]}, KPRN [2]}, Wide&Deep [3]}, RKGE [4]}, RippleNet [5]}, KGCN [6]}. These algorithms were chosen because they are all influential algorithms based on knowledge graph, and some of the algorithm ideas have provided useful inspiration for us to propose the URIR algorithm.
